An optical communication device and wavelength selection method

An optical communication and sub-wavelength technology, applied in the field of communication, can solve the problems of large signal insertion loss and filtering

CN111856658BActive Publication Date: 2022-03-25HUAWEI TECH CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
Publication Date
2022-03-25

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Abstract

This application discloses an optical communication device. The optical communication device can be a reconfigurable optical add-drop multiplexer. In this application, the optical deflection component can be incident on the first input component and dispersed by the first wavelength dispersion component. The subsequent multiple first sub-wavelength beams are angularly deflected to obtain multiple second sub-wavelength beams, and the multiple second sub-wavelength beams are transmitted to the second optical switch array, synthesized by the third wavelength dispersion component, and passed through the first output Component dimension output, the optical deflection component can also angle-deflect multiple first sub-wavelength beams to obtain multiple third sub-wavelength beams, which are synthesized by the second wavelength dispersion component and incident to the third optical switch array, through the second output The sub-wavelength output of the component, wherein the beam propagation directions of the second sub-wavelength beam and the third sub-wavelength beam are different. The present application can reduce the insertion loss caused by the first-level optical switch array for the downwave signal.
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Description

technical field

[0001] The present application relates to the field of communications, and in particular, to an optical communication device and wavelength selection method. Background technique

[0002] With the rapid growth of video and cloud services, operators are particularly concerned about the flexibility of optical network construction, and the reduction of optical network construction and operation and maintenance costs. There are more and more directional dimensions (or transmission paths) that network nodes need to cross-connect, and operators can remotely and automatically perform dimension switching by using a reconfigurable optical add-drop multiplexer (ROADM). , to replace the previous way of manually dropping the site to replace the optical fiber connection, so as to meet the requirements of dynamic network connection.

[0003] With the rapid development of ROADM technology, the ROADM (abbreviated as CDC ROADM) with colorless (wavelength independent) charact...

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Embodiment Construction

[0153] In order to make the objectives, technical solutions and advantages of the present invention clearer, the present invention will be further described in detail below with reference to the accompanying drawings in this embodiment. It should be understood that the specific embodiments described herein are only used to explain the present invention, but not to limit the present invention. Obviously, the described embodiments are only some, but not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0154] The terms "first", "second" and the like in the description and claims of the present application and the above drawings are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence. It should be understood that the term...